Pipe bowl lining filterer



May 21, 1940 w. E. FoRREsTER PIPE BOWL LINING FILTERER Filed arch 17, 1938 25%@ hmor:

M2012 reser Patented May 21, 1940 UNITED `STATES PATENT 'OFFICE ,1

1 Claim.

The present invention relates to an improved lining for tobacco pipe bowls and also means for retarding the fouling of the smoke channel leading through the stem of the pipe.

As many pipes are made of soft materials such as wood and the like, which would burn easily, linings of this :general character have long been in use to prevent this destructive action.

One of the objects of this invention is to provide an improved lining which is durable, easily assembled and which may be attached to the average pipe bowl.

Another object of the invention is to provide means, whereby the lining is capable of vertical adjustments in order that it may be more adaptable to bowls of different heights.

Still another object of the invention is to provide a grating associated with and located adjacent the bottom of the lining in order to give the pipe better smoking qualities.

A further object of the invention is to provide means adjacent the bottom of the bowl for receiving a filter for the smoke passing into the stem of the pipe.

With these and other objects in view the invention will be more apparent from the specifications when taken in connection with the accompanying drawing which forms a part of this application and in which:

Fig. 1 is a vertical sectional view of the assembled pipe bowl and lining. y

Fig. 2 is a sectional view of the pipe bowl only taken along the line 2-2 of Fig. 1.

Fig. 3 is a vertical sectional view of the upper lining member 2 similar to the View shown of this member in Fig. 1.

Fig. 4 is a vertical sectional view of the grate member 4, similar to the View of this member as shown in Fig. 1.

Fig. 5 is a sectional view of the grate member 4 taken along the line 5-5 of Fig. 4.

Fig. 6 is a vertical sectional view of the lining, as it appears when removed from the pipe bowl the scale of the various gures not being precisely uniform.

Referring to the drawing by numerals, each of which are used to indicate the same, or similar parts in the different figures showing the invention, there is provideda cylindrical lower tube member I that has adjacent its lower end l2 an inwardly deected shoulder member 8. Supported upon this shoulder member 8 is a concave grate member 4. The upper portion of the lining lis composed of a similar tube member 2, which is adapted to bel telescopically received within the lower tube lining l. The upper tube member has positioned about its .upper periphery a iiange 3, which is adapted to rest normally upon the upper edge Ill of the pipe bowl. yThe upper and lower tubes I and 2 are fitted so as to retain their relal tive adjusted positions when tted within th bowl.

Adjacent the bottom of tube I is the cupshaped grate member 4. This member is adapted to receive the tobacco and prevent it from being l0 packed against the bottom I0 of the bowl. The step or shoulderv8 in the lower lining member is for the purpose of properly locating the grate l within the lining and also to furnish a supporting means for the grate. The shoulder 8 is located 16 a short distance from the lower edge of the lining, which is adapted to rest on the step 9 formed into the bowl adjacent the bottom thereof.

The grate member is provided with a plurality of openings 5 for allowing the smoke to pass 20 below the grating and into the passage ll of the stem. Lying between the grate member 4 and the bottom l0' of the bowl l0, is a small area 'l for receiving a suitable filtering agent 6, such as cotton, tobacco, or other appropriate materials.

The present lining is easily installed within a standard pipe bowl provided, of course, the diameter of the bowl is of the proper size. The telescopic features of the lining members make it possible to adjust the height of the lining to ac- 30 commodate a variety of lengths of bowls which may have substantially the same diameter.

When the lining is installed at the time of manufacturing the pipe, it is an easy matter to form the bowl to `fit the lining. However, if the installation takes place later, it may be necessary to drill the bowl to the proper size. If it is not possible to select a lining from the several standard sizes which will t snugly within the bowl, a size should be selected slightly larger than the bowl opening and the original opening reamed out by a special tool of the proper diameter and having means thereon for forming the step 9, which receives the lower edge of the bottom tube member.

The lter may be replaced either by removing the lining-or by a plug` or other means (not shown), located in the bottom of the bowl, which would give proper access to the area 'l for thisA 50 purpose.

If the lining is made of metal, which is preferable, it may be removed and cleaned by holding the same over a small alcohol flame.v This will burn off the carbon and other foreign substance sticking thereto and give the lining a clean and new appearance.

The improved lining is quite advantageous in preserving the life of the pipe and also in providing a cool and satisfactory smoke.

The invention has been described in detail for a specic improved pipe lining and its use, in order that the invention may be more fully understood. However, the specific terms are used descriptively rather than in a limited sense and the scope of the invention is best defined in the fo1- lowing claim:

In a lining for a pipe bowl, a tubular member having one portion thereof of less diameter than the remaining portion and connected by a part forming a shoulder, a grate for tobacco supported on said shoulder, and a second tubular member having an external diameter corresponding substantially to that of the internal diameter of the rst tubular member and formed with an outwardly extended flange at one end thereof, said second tubular member being in telescopic relation with said rst tubular member and said ange being adapted to contact the upper edge of the pipe bowl.

WASHINGTON E. FORRESTER. 

